4.5 Billion Years in 1 Hour – YouTube Dictation Transcript & Vocabulary
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Interactive Transcript & Highlights for Dictation
1.Earth is 4.5 billion years old – for your brain to truly grasp, so here is an : every second around 1.5 million years will pass – you're on a musical train ride looking out the window, passing all of Earth's History in an hour
2.Watch the eons pass and experience how long a billion years really is
3.You can have this in the background, study with it or just enjoy the ride
4.From time to time, I’ll say a few words
5.4.5 billion years ago, right after it was born, Earth was a hell of lava… Pretty early in its history, Earth collides with a Mars sized object called Theia, which forms the moon that you now see in the sky
💡 Tap the highlighted words to see definitions and examples
Key Vocabulary (CEFR B2)
impossible
A2An impossibility
Example:
"Earth is 4.5 billion years old – impossible for your brain to truly grasp, so here is an experiment:"
experiment
B2A test under controlled conditions made to either demonstrate a known truth, examine the validity of a hypothesis, or determine the efficacy of something previously untried.
Example:
"Earth is 4.5 billion years old – impossible for your brain to truly grasp, so here is an experiment:"
chemicals
A2Any specific chemical element or chemical compound or alloy.
Example:
"more chemicals are mixed in from inside the earth and life can use them to make new things!"
oxidation
B2The combination of a substance with oxygen.
Example:
"that will change the planet forever: The Great Oxidation Event."
important
A2Having relevant and crucial value.
Example:
"One of the most important moments in the history of life. But yes, kind of looks not that impressive."
impressive
A2Making, or tending to make, a positive impression; having power to impress
Example:
"One of the most important moments in the history of life. But yes, kind of looks not that impressive."
surrounded
A2To encircle something or simultaneously extend in all directions.
Example:
"Weird, right? Feels like it should be older. But around here it begins to solidify into a iron crystal surrounded by hot liquid metal."
happening
A2To occur or take place.
Example:
"Wow! What's happening? Suddenly life gets big! In a hot second multicellular organisms become widespread!"
multicellular
B1Such an organism
Example:
"Wow! What's happening? Suddenly life gets big! In a hot second multicellular organisms become widespread!"
widespread
A2Affecting a large area (e.g. the entire land or body); broad in extent; widely diffused.
Example:
"Wow! What's happening? Suddenly life gets big! In a hot second multicellular organisms become widespread!"
| Word | CEFR | Definition |
|---|---|---|
| impossible | A2 | An impossibility |
| experiment | B2 | A test under controlled conditions made to either demonstrate a known truth, examine the validity of a hypothesis, or determine the efficacy of something previously untried. |
| chemicals | A2 | Any specific chemical element or chemical compound or alloy. |
| oxidation | B2 | The combination of a substance with oxygen. |
| important | A2 | Having relevant and crucial value. |
| impressive | A2 | Making, or tending to make, a positive impression; having power to impress |
| surrounded | A2 | To encircle something or simultaneously extend in all directions. |
| happening | A2 | To occur or take place. |
| multicellular | B1 | Such an organism |
| widespread | A2 | Affecting a large area (e.g. the entire land or body); broad in extent; widely diffused. |
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